From 7f4f6cea80880e9955c2c1734f3238f3d66f0d86 Mon Sep 17 00:00:00 2001
From: LemonInTheDark <58055496+LemonInTheDark@users.noreply.github.com>
Date: Thu, 10 Aug 2023 16:08:27 -0700
Subject: [PATCH] Fixes TGM maploading not respecting upper_y crops (#77495)

## About The Pull Request

I think I forgot how the numbers worked here, seems that way at least
given how the DMM stuff looks
Closes #77482

Thanks to itsmeow for pointing this out
Oh also fixes tgm using maxx for the y comp. it should never actually
matter but yaknow just in case
---
 code/modules/mapping/reader.dm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/code/modules/mapping/reader.dm b/code/modules/mapping/reader.dm
index a1ef04e204f..96b555457d7 100644
--- a/code/modules/mapping/reader.dm
+++ b/code/modules/mapping/reader.dm
@@ -330,7 +330,7 @@
 	var/relative_y = first_column.ycrd
 	var/highest_y = relative_y + y_relative_to_absolute
 
-	if(!cropMap && highest_y > world.maxx)
+	if(!cropMap && highest_y > world.maxy)
 		if(new_z)
 			// Need to avoid improperly loaded area/turf_contents
 			world.increaseMaxY(highest_y, max_zs_to_load = z_offset - 1)
@@ -343,7 +343,7 @@
 	var/y_skip_above = min(world.maxy - y_relative_to_absolute, y_upper, relative_y)
 	// How many lines to skip because they'd be above the y cuttoff line
 	var/y_starting_skip = relative_y - y_skip_above
-	highest_y += y_starting_skip
+	highest_y -= y_starting_skip
 
 
 	// Y is the LOWEST it will ever be here, so we can easily set a threshold for how low to go